Okay for part a i got that all matrices that are skew-symmetric will satisfy that property but now im having trouble finding part b.

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- November 12th 2009, 06:23 AM #1

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## Need help for one question

(a) Find all nonsymmetric 2x2 matrices A such that AA^T =(A^T)A

(b) Let S(subscript1) be the set of all matrices found in part (a) and let S(subscript2) be the set of all 2x2 scalar matrices. Define W = S(subscript1) U S(subscript2)

(i) Show that W is a subspace of M(subscript2x2)

(ii) Find dim (W)

I'm really struggling in this class so i have no clue how to do this. Help?

- November 12th 2009, 06:50 AM #2

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- November 12th 2009, 09:44 AM #3

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- November 12th 2009, 09:45 AM #4

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